EP0084702B1 - A belt for power transmission - Google Patents

A belt for power transmission Download PDF

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Publication number
EP0084702B1
EP0084702B1 EP82305976A EP82305976A EP0084702B1 EP 0084702 B1 EP0084702 B1 EP 0084702B1 EP 82305976 A EP82305976 A EP 82305976A EP 82305976 A EP82305976 A EP 82305976A EP 0084702 B1 EP0084702 B1 EP 0084702B1
Authority
EP
European Patent Office
Prior art keywords
reinforcement members
belt
cog belt
members
cogs
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP82305976A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0084702A1 (en
Inventor
Hiroshi Takano
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsuboshi Belting Ltd
Original Assignee
Mitsuboshi Belting Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mitsuboshi Belting Ltd filed Critical Mitsuboshi Belting Ltd
Priority to AT82305976T priority Critical patent/ATE35724T1/de
Publication of EP0084702A1 publication Critical patent/EP0084702A1/en
Application granted granted Critical
Publication of EP0084702B1 publication Critical patent/EP0084702B1/en
Expired legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16G—BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVING PURPOSES; CHAINS; FITTINGS PREDOMINANTLY USED THEREFOR
    • F16G5/00—V-belts, i.e. belts of tapered cross-section
    • F16G5/04—V-belts, i.e. belts of tapered cross-section made of rubber
    • F16G5/06—V-belts, i.e. belts of tapered cross-section made of rubber with reinforcement bonded by the rubber
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16G—BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVING PURPOSES; CHAINS; FITTINGS PREDOMINANTLY USED THEREFOR
    • F16G5/00—V-belts, i.e. belts of tapered cross-section
    • F16G5/20—V-belts, i.e. belts of tapered cross-section with a contact surface of special shape, e.g. toothed

Definitions

  • This invention relates to V-belts and in particular to cog-type V-belts.
  • V-shaped power transmission belt the inner surface portion thereof is wave- shaped so as to define a plurality of longitudinally spaced cogs for providing improved flexibility of the belt in passing around the pulleys of the drive system. Because of the resiliency of the rubber body, the belt tends to warp laterally and otherwise deform in engaging the pulleys, thus decreasing the power transmission ability of the belt and causing damage to the belt so as to undesirably shorten the useful life thereof.
  • the inner surface of the compression section of the belt consists of a fabric layer having a weft consisting of alternating metal rods and cotton cords. More specifically, the inner section of the belt consists of a number of light metal rods which are surrounded on the inside by one or more plies of fabric and on the outside by one or more plies of fabric. The fabric layers are bent around the rods so as to be in engagement with each other and are fastened together by means of stitches or staples.
  • the fabric forming the compression section defines one or more plies arranged in waves in such a manner that the cotton weft forms the crests and the metal rods form the sides of the waves.
  • FR-A-1176766 discloses a V-belt having transverse tubular reinforcement members completely embedded within cogs of the V-belt.
  • GB-A-365293 discloses a V-belt having filaments extending transversely through cogs of the belt.
  • the filaments are solid in cross-section and have ends which are covered by a rubberised fabric or which extend to the transverse ends of the V-belt.
  • V-section cog belt comprising:
  • the reinforcing members extend less than the full width of the cogs so as to have the opposite ends thereof spaced inwardly from the opposite side surfaces of the belt.
  • a fabric layer covers the inner surface of the rubber body inwardly of the reinforcement members, and/or the outer surface of the rubber body outwardly of the tensile cords.
  • the reinforcing members may be made of metal, synthetic resin or some combination of metal and synthetic resin.
  • the reinforcing members comprise spring plates.
  • the reinforcement members are provided with a rounded outer periphery, and in another embodiment the reinforcement members are provided with a polyhedral outer periphery.
  • the reinforcement members are provided with an outer periphery defining a plurality of projections.
  • the reinforcement members In an embodiment of the present invention utilizing tubular reinforcement members, the reinforcement members have an outer configuration different from the inner configuration thereof.
  • a plurality of the reinforcement members may be provided in each of the cogs.
  • the reinforcement members comprise spring plates embedded in the cogs, which may be formed of a synthetic resin.
  • the reinforcement members are formed of a material having a high thermal conductivity so as to provide improved dispersion of heat developed in the V-belt during operation thereof, to the outside surfaces so as to facilitate heat transfer to the ambient atmosphere for improved long life of the belt.
  • a V-section cog belt generally designated 10 is provided for use in a drive system having driving and driven pulleys 12 and 13 about which the belt is entrained in providing a driving connection therebetween.
  • belt 10 includes a V-section cushion rubber body 14 having longitudinally spaced inner cogs 15 defining an inner surface 16.
  • a fabric layer 17 covers inner surface 16.
  • the belt body further defines an outer surface 18 which is provided with a covering fabric 19.
  • a plurality of longitudinally extending tensile cords 20 are provided in the belt body outwardly of the cogs and inwardly of the outer surface 18 for providing controlled longitudinal strength of the belt.
  • the invention comprehends the provision in cogs 15 of elongate rigid metal reinforcement members 21 extending transversely across the cogs in outwardly spaced relationship to inner surface 16 so as to be effectively embedded in the cogs.
  • the reinforcement members comprise tubular members having an outer periphery 22 and an inner periphery 23.
  • FIG. 3 shows a cog belt generally designated 24 having a cog belt similar to cog belt 10 but wherein the reinforcement members 25 comprise solid cross section members in lieu of the hollow members 21 of belt 10. In all other respects, belt 24 is similar to belt 10.
  • the reinforcement members 21 or 25 of belts 10 or 24 may extend fully across the width of the cog 15 so as to terminate in the side surfaces 26 and 27 of the belt.
  • the belts of the present invention as illustrated in Figure 5, in which a modified form of the belt 10a or 24a, shows the reinforcement members 21 a or 25a to have a length less than the width between the side surfaces of the belt so as to terminate in inwardly spaced relationship to the side surfaces thereby avoiding engagement of the reinforcing members with the sidewalls of the pulley 12 or 13.
  • the belts 10a and 24a are similar to the belts 10 and 24 discussed above.
  • the invention comprehends the provision of the reinforcing members in any one of a plurality of different cross- sectional configurations.
  • such members may have a plurality of different outer peripheral configurations and inner peripheral configurations.
  • one illustrative tubular reinforcement member 21a' may be provided with a circular outer peripheral surface 21 a" and a circular inner surface 21 a"'.
  • the outer surface 21b" of the member 21b' is rectangular, and more specifically, is square, and the inner surface 21b"' is rectangular, and more specifically, square.
  • the outer surface 21c" of member 21c' is triangular and the inner surface 21 c'" has a different configuration from the outer surface, and more specifically, as illustrated, is round or circular.
  • the embodiment of Figure 6c illustrates the arrangement wherein the outer surface differs in configuration from the inner surface.
  • the outer surface 21d" of member 21d' may be polyhedral, and more specifically, as illustrated, is hexahedral. As shown, the inner surface 21d"' may be round.
  • tubular member 21 e' is illustrated in Figure 6e as having a plurality of outwardly extending projections 21 e" defining the outer surface thereof.
  • the inner surface 21e"' is round.
  • reinforcing members 25 having a solid cross section illustratively may comprise members having different outer surface configurations.
  • reinforcing member 25' of Figure 7a may be provided with a circular outer surface 25a".
  • Reinforcing member 25b' in Figure 7b may be provided with a rectangular, and more specifically, as illustrated, square outer surface 25b".
  • the solid section reinforcing members may have any desirable polyhedral surface configuration, and as illustrated in Figure 7c, reinforcement member 25c' is provided with a tetrahedral outer surface configuration 25c".
  • Reinforcement member 25d' in Figure 7d is provided with a hexahedral outer surface 25d”.
  • Reinforcement member 25e' is provided with an outer surface defining a plurality of projections 25e".
  • FIG. 8 Another modified form of belt generally designated 28 is illustrated in Figure 8 to comprise a beit generally similar to belt 10, but wherein the reinforcement members 29 comprise a plurality of spring plate members. As shown in Figure 8, a plurality of the spring plate members may be provided in each cog in parallel spaced relationship. Belts in accordance with the present invention have the general features of the belt shown in Figure 8 except that the spring plates are in recessed relationship with the belt side edges.
  • the belt body may be formed of suitable power transmission belt material, such as natural rubber, styrene butadiene rubber, polychloroprene rubber, nitrile rubber, etc.
  • the rubber body may be formed in the conventional manner utilizing an outer rubber layer 14a and an inner rubber layer 14b cooperatively embedding the tensile cords 20.
  • the rubber material of the body may comprise rubber blends, as desired.
  • the outer covering fabric 19 preferably comprises a bias fabric illustratively formed of cotton warp and woof yarns. Further illustratively, the fabric 19 may comprise a wide angle fabric.
  • the cover fabric may be laminated to the outer surface 18 of the rubber body in one or more layers, such as from one to three layers.
  • the tensile cords may comprise conventional polyester, aliphatic polyamide, glass fiber, etc., cords having relatively high strength and low extensibility.
  • the fabric 17 comprises a fabric similar to fabric 19.
  • fabric 17 may comprise an elastic woven fabric formed of wool, a fabric formed of crimped nylon warp and normal nylon weft yarns, etc.
  • the reinforcing members are preferably formed of a strong metal.
  • the metal may comprise a ferrous metal, such as iron or an iron alloy, such as steel, aluminum or an aluminum alloy.
  • the reinforcing plates 29 of belt 28 are preferably formed of an elastic metal having a thickness in the range of approximately .15 to 2 mm, and a coefficient of elasticity of at least about 147 150 N/ mm 2 (15,000 kp/mm2).
  • the plurality of plates 29 in each cog may be provided in the form of a laminate with interposed layers of synthetic resin or may be embedded in spaced relationship in the rubber material of the belt body, as desired.
  • the plates may be formed of synthetic resin.
  • the pitch and configuration of the cogs may be varied as desired by the user.
  • the reinforcing members provide stiffening and improved lateral stability of the belt.
  • the reinforcing members provide for absorption of impulsive stresses developed in the belt during driving operation.
  • the reinforcing members resist dishing of the belt as may occur with conventional belt configurations so as to provide improved power transmission and effectively prevent permanent dish deformation as occurs in prior art belts.
  • the use of the spring plates 29 resists the shearing forces developed by the loading of the belt during driving operation.
  • the elasticity of the plates and the interposed rubber or synthetic resin layers causes the stresses to be dispersed in the cogs to provide improved stable transmission characteristics. It has been found that this belt construction transmits power with less belt volume while reducing the amount of floating of the belt caused by the centrifugal forces developed in high speed operation.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Springs (AREA)
  • Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
EP82305976A 1982-01-26 1982-11-10 A belt for power transmission Expired EP0084702B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82305976T ATE35724T1 (de) 1982-01-26 1982-11-10 ''v''-band zur kraftuebertragung.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP9299/82 1982-01-26
JP1982009299U JPS58111458U (ja) 1982-01-26 1982-01-26 動力伝動用ｖベルト

Publications (2)

Publication Number Publication Date
EP0084702A1 EP0084702A1 (en) 1983-08-03
EP0084702B1 true EP0084702B1 (en) 1988-07-13

Family

ID=11716586

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82305976A Expired EP0084702B1 (en) 1982-01-26 1982-11-10 A belt for power transmission

Country Status (6)

Country Link
US (1) US4493681A (sv)
EP (1) EP0084702B1 (sv)
JP (1) JPS58111458U (sv)
AT (1) ATE35724T1 (sv)
CA (1) CA1202798A (sv)
DE (1) DE3278769D1 (sv)

Families Citing this family (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0142682Y2 (sv) * 1984-11-26 1989-12-13
EP0188854B1 (en) * 1985-01-17 1989-04-05 Mitsuboshi Belting Ltd. Power transmission belt
JPH0237309Y2 (sv) * 1985-03-07 1990-10-09
WO1988005138A1 (en) * 1987-01-12 1988-07-14 Brown, Neuburne, H., Jr. Continuously variable transmission
FR2597564B2 (fr) * 1986-04-21 1989-08-18 Hutchinson Courroie de transmission de puissance perfectionnee
FR2589209B1 (fr) * 1985-10-29 1989-06-02 Hutchinson Courroie de transmission de puissance perfectionnee
DE3669764D1 (de) * 1985-10-29 1990-04-26 Hutchinson Sa Treibriemen.
FR2624238B1 (fr) * 1987-12-08 1990-05-04 Hutchinson Perfectionnements aux courroies de transmission de puissance
FR2638800A1 (fr) * 1988-11-07 1990-05-11 Hutchinson Courroie de transmission de puissance du type trapezoidal
JP3094120B2 (ja) * 1996-06-21 2000-10-03 三ツ星ベルト株式会社 背面帆布付きｖリブドベルト
ATE347060T1 (de) 2000-05-09 2006-12-15 Gates Corp Riemen mit blöcken für ein stufenlos regelbares getriebe
US6485386B2 (en) 2000-05-18 2002-11-26 The Gates Corporation Transverse reinforced CVT belt
EP2034222B1 (en) 2000-06-09 2011-01-05 Tokyo Automatic Machinery Co., Ltd. Continuously variable transmission
JP4785159B2 (ja) 2000-06-09 2011-10-05 東京自動機工株式会社 可変伝動機
JP4729833B2 (ja) 2001-05-10 2011-07-20 東京自動機工株式会社 伝動機のプーリ加圧制御装置
US6919115B2 (en) * 2002-01-08 2005-07-19 Cool Options, Inc. Thermally conductive drive belt
US7210973B2 (en) * 2002-04-11 2007-05-01 Brp Us Inc. Outboard engine cowling
ITTO20030010A1 (it) * 2003-01-14 2004-07-15 Pedri Roberta Cinghia dentata di trasmissione provvista di armatura metallica.
US20050113199A1 (en) * 2003-11-26 2005-05-26 Brecoflex Co., L.L.C. Toothed belt with tooth reinforcements
DE102011050483A1 (de) * 2011-05-19 2012-11-22 Contitech Antriebssysteme Gmbh Antriebsriemen mit einem Verstärkungsband oder einem Verstärkungsgeflecht oder mit zonenweise angeordneten Verstärkungselementen innerhalb des Unterbaus
JP6205358B2 (ja) * 2012-07-26 2017-09-27 バンドー化学株式会社 ノッチ付きラップドｖベルト
CN106907427A (zh) * 2017-05-03 2017-06-30 青岛铠硕机械科技有限公司 一种自动刨锯机用传动皮带
DE102017215654A1 (de) * 2017-09-06 2019-03-07 Contitech Antriebssysteme Gmbh Antriebsriemen mit einer profilierten Riemenrückseite
IT201900024358A1 (it) * 2019-12-18 2021-06-18 Vision Tech S R L Falso dente per cinghia dentata, relativo semilavorato, cinghia dentata con falso dente e metodo per assicurare un elemento alla cinghia dentata
CN112879501B (zh) * 2021-01-27 2022-07-08 浙江耐者胶带股份有限公司 一种低生热耐弯曲抗疲劳v带

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1890080A (en) * 1928-08-08 1932-12-06 Abraham L Freedlander Double cog belt
GB365293A (en) * 1930-02-07 1932-01-21 Abraham Lincoln Freedlander Improvements in or relating to cog belts
US1982869A (en) * 1931-04-15 1934-12-04 Us Electrical Mfg Company Flexible belt and method of making it
US2189049A (en) * 1937-07-17 1940-02-06 Ungar Gustave Adolphe V belt
FR857121A (fr) * 1938-07-04 1940-08-26 Courroie trapézoïdale renforcée par des fils ou des lames d'acier
US2514429A (en) * 1945-06-27 1950-07-11 Dayton Rubber Company Double cog belt
US2625828A (en) * 1950-10-19 1953-01-20 Gates Rubber Co Cog type v belt
FR1176766A (fr) * 1957-06-17 1959-04-15 Perfectionnement aux courroies trapézoïdales
US3485707A (en) * 1966-05-31 1969-12-23 Goodrich Co B F Belt
US4053547A (en) * 1971-10-14 1977-10-11 The Gates Rubber Company Method for producing a positive drive belt
GB1400799A (en) * 1972-11-14 1975-07-23 Goodyear Tire & Rubber V-belts
US3835720A (en) * 1973-08-10 1974-09-17 Dayco Corp Endless power transmission belt and method of making same
US3968703A (en) * 1975-01-24 1976-07-13 Dayco Corporation Endless power transmission belt
US3941005A (en) * 1975-03-03 1976-03-02 The Gates Rubber Company Power transmission belt
JPS5220623U (sv) * 1975-07-31 1977-02-14
US4151755A (en) * 1977-06-06 1979-05-01 Borg-Warner Corporation Power transmission belt

Also Published As

Publication number Publication date
JPS626349Y2 (sv) 1987-02-13
EP0084702A1 (en) 1983-08-03
DE3278769D1 (en) 1988-08-18
CA1202798A (en) 1986-04-08
US4493681A (en) 1985-01-15
ATE35724T1 (de) 1988-07-15
JPS58111458U (ja) 1983-07-29

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